Fix Linux build failure with GCC 4.8.4 due to missing braces.
Change-Id: Ic0de6520605149f1bb74f8b60ce8cab8beda10a4
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-by: Maurice Ma <maurice.ma@intel.com>